Tube making machine



A ril18,1939. c. MAJER 5 TI IBE MAKING MACHINE Filed July 25, 1958 3 Sheets-Sheet 1 April 18, 1939. MAJER 2,154,953

TUBE MAKING MACHINE Filed July 25, 1958 3 Sheets-Sheet 2 April 18, 1939. c. MAJER 2,154,953

' TUBE MAKING MACHINE Filed July 23, 19:58 3 Sheets-Sheet 5 MM Apr-.18, 1939- A 2 2,154,953

' UNITED STATES PATENT OFFICE TUBE MAKING MACHINE Christian Majer, Tubingen-on-the-Neckar,

Germany Application July 23,1938, Serial No. 220,936

. In Germany July 29, 1937 7 Claims. (01. 271-27) Rotating cylinders with stationary nozzles are the cylinder 3. Bars l3 are radially'shiftable in known for sucking cut sheets from piles and for guides l2 in the cylinder, and the suction bars 6 feeding them to devices on paper working maare oscillatable about pins 14 at the outer ends chines for further treatment. These known arof these bars l3. The suction bars 6 are conrangementsare open to the objection; that, both nected at one side of the pins H to tension 5 the sucking and lifting of the paper sheet and springs l5 by means of which they are constantalso the delivering thereof is dependent upon prely pulled inwards. Arms l6 with guide rollers are determined distances, with the result that a permounted on the suction bars 6 at the other side feet feeding of the blank is not ensured. of the pins l4, said rollers running on guides l'l [0 This objection is overcome by the machine acand I8 during the up and down movement of the 10 cording to the invention for lifting, pasting, conbars. 'During the suction period the suction" bars veying and delivering blanks to the working ap- 6 must be moved horizontally downwards. In

paratus by means of suction air on paper workthis instance the guide surface IQ ofthe guide I! ing machines of all kinds, especially tube windis straight and vertical, whereas the guide sur- [5 ing and packing machines. This machine is face of the upper guide I8 is curved so that 16 characterized in that on the periphery of a transduring its upward movement the upper suction porting element such as a drum, cylinder, segbar 6 assumes an oblique position corresponding ment or the like, which is rotatably or oscillatably to'the conical winding mandrel 2|. The curved mounted, one or more countersunk, outwardly surface of the upper guide l8 depends upon the Z0 ,movable suction bars or the like are arranged shape of the winding mandrel 2|. The bars I3 20 which, when the transport means is at a standare moved by two-armed levers 22 and 23 which still, move out of the periphery thereof and suckare rocked by earns 24, '25. The bars l3 have on the blanks, whereas the two or-more addipins 26'and 21' which, during the rotation of the tional bars deliver the blank for further treatcylinder 3 through an angle of about 180 en-' ment. After sucking and delivering the blanks, gage in continuous slots 28 and 29 in the levers the suction bars are moved back into the cylin- 22 and 23. As soon as the cylinder 2 has assumed der until they are flush with'the periphery therethis position, it remains stationary for a short of. If, for example conical tubes are wound on time, whereupon the levers 22 and 23 are rocked, the tube winding machine the suction bars must the lever 22 downwards and the lever 23 upwards be so mounted in the cylinder that they can aswith the result that the lower suction bar 6 is 30 sume an oblique position during the delivering moved downwards and pressed against the upperof the blank to the winding mandrel. "By this blank 30 for suction. At the same time the upper machine a reliable lifting and transporting of suction bar is pushed upwards against the windthe blank from the pile and a reliable delivering ing mandrel by the upward movement of the lever of the blank are attained. 23 and during this movement is moved past the 3 The pasting mechanism with pasting roller is cam 20 and thus assumes an oblique position arranged on the p p y of the Cy nder or the, corresponding to the conical winding mandrel 2| like in the direction of rotation in such a man- (Fig 2 h levers 22 'n are actedupon ner that the container with the pasting roller. by a Spring 3 by means of which the arms 32' 10 can be moved away from the cylinder after th and 33 are pulled continually against the cams pasting of the blank.

An embodiment ofthe invention is illustrated in the accompanying drawings in which:

Fig. 1 shows the machine in front elevation,

24 and 25. After sucking up the uppermost blank from the pile 30 and the lifting and delivering of the preceding blank 34 to the winding mandrel 2|, the suction bars 6 are returned, under the fi g i i ii ii g zg and influence of the levers 22 and 23 and the springs machine fram I a conveyor cylinder 3 I5, into their initial position in the recesses 5, is intermittently rotatable about an axle 4 mountthe whereupon the coned in bearings Th cylinder 3 has in its tmues its rotation. The sucked up blank is then ripht'ery recesses 5 in which outwardly shiftable carried past the pasting roller 36 and smeared 50 suction bars 6 are arranged. The suction bars 6 with paste- As soon as the cylinder-has rotated have longitudinal bores I from which suction through an angle of and the lower 5119mm ports a extend. The longitudinal bores 1 of the bar 6 has b raised, he cycle of ope atio comsuction bars 6 'are connected by hose conduits 9 mences afresh, the lower bar 6 sucking up t to a suction conduit III in the hollow shaft 4 of uppermost blank from the pile 30 and the upper 55 centric on the driven shaft 40 through the intermediary of a connecting rod 39. The paste container 31 is moved with the roller 36 in such a manner that the pasting roller 36 is pressed against the cylinder 3 as the blank 34 is being carried past the roller, and as soon as the blank has been pasted, the paste holder 31 is moved away from the cylinder 3 with the pasting roller 36. The cylinder 3 is of such a large diameter, and the pasting mechanism 36, 31 is so arranged in front of the cylinder 3 that, when the blank 34 has been brought under the winding mandrel 2|, the blank 34 has left the pasting roller 36 (Fig. 1). At this moment the pasting mechanism 36, 31 is moved away from the cylinder 3. The paste container might be shiftable in guides instead of being oscillated. The whole machine is driven by a belt pulley 4|, driving shaft 40 with the cams mounted thereon and by transmission wheels 42, 43, 44 and 45. A drum, disc or even segments might be used instead of the cylinder 3, and these'might receive an oscillating instead of rotary movement. More than .two suction bars 6 might also be provided. The winding mandrel 2| may be of any cross-section and shape, that is might be cylindrical, polygonal or the like. When using winding mandrels rotating in a horizontal 'plane for example cylindrical or square mandrels the suction bars 6 may be arranged horizontally fixed on the bars l3. In this construction the guides l1 and I6 may be omitted.

I claim:

1. In a machine for producing paper tubes from blanks heaped up in a pile, a device for lifting the actually uppermost blank from the pile of blanks, pasting said blank and delivering said pasted blank to the machine for further treatment, said device comprising in combination a conveying element having two recesses in its outer surface, two suction bars one shiftably mounted in each of said recesses and each adapted to suckon the uppermost blank from the pile of blanks when the conveying element reaches and moves over said pile, a pasting roller in the path of movementiofsaid uppermost blank in close proximity to 'the surface of said conveying element and adapted to paste said blank during the rotation of said element, and a winding device adapted to wind said pasted blank, and means for success'ively moving one -of said bars outwards to deliver said pasted blank to said winding device at the moment the other bar is sucking a fresh blank from the pile.

2. In a machine as specified in claim 1, the means for shifting the suction bars comprising carrier bars carrying said suction bars, guides in the rotary element for said carrier bars, levers engaging said guides, and cams cooperating with said levers to rock said levers and radially shift said carrier bars and move said suction bars out of their recesses.

3..In a machine as specified in claim 1, the means for shifting the suction bars comprising carrier bars, each carrying one of said suction bars, guides for said carrier bars arranged in the rotary element, pins one projecting from each of said carrier bars, rocker levers having each a recess at one end adapted to engage one of said pins, and earns cooperating with the other end of said levers to oscillate said levers and to radially shift said carrier bars in said cylinder through the intermediary of said pins, and move said suction bars out of said recesses;

4. In a machine as specified in claim 1, the means for shifting the suction bars comprising carrier bars radially shiftable in the rotary con- I veyor element, means for radially shifting said carrier bars, pins pivotally connecting each of said suction bars to the outer end of one of-said carrier bars, retracting springs one connected to each of said suction bars on one side of its pivot pin, and tending to return said suction bars into their recesses, arms one projecting inwardly from each of said suction bars on the opposite side of its pivot pin to its spring, rollers one on the inner end of each of said arms, and guides in said cylinders in the path of said rollers during the radial displacement of said'carrier bars and adapted to control the movement of said suction bars through the intermediary of said arms.

5. In a machine as specified in claim 1, a pasting mechanism arranged near the periphery of "the rotary element between the pile and the paper working tool, said rotary element being of such diameter and said pasting mechanism being so arranged that the blank has'passed said pasting mechanism before delivering to said tool. 6. In a machine as specified in claim 1, a pasting mechanism arranged near the periphery of said rotary element between the pile and the paper working tool, and means for moving said mechanism alternately towards and away from said rotary element during the rotation of this of said uppermost blank in close proximity to the .surface of saidconveying element and adapted to paste said blank during the rotation of said element, and a winding device adapted to wind said pasted blank, and means for stopping said element after the pasting operation and for moving said bar outwards to deliver said pasted blank to said winding device.

CHRISTI "N MAJER. 

